=R. purpuri´na= Quel. and Schulz.—purple. (Plate XLV_a_.) =Pileus= fleshy, margin acute, subglobose, then plane, at length depressed in the center, slightly viscid in very wet weather, not striate, often split, pellicle separable, rosy-pink, paling even to light yellow. =Gills= crowded in youth, afterward subdistant, white, in age yellowish, reaching the stem, 2–4 lines broad in front, not greatly narrowed behind, almost equal, not forked. =Stem= spongy, stuffed, very variable, cylindrical, attenuated above and below the middle, rosy-pink becoming paler (rarely white) toward the base, color obscure in age. =Flesh= fragile, white, reddish under the skin; odor slight, taste mild. =Spores= white, globose, sometimes sub-elliptical, 4–8µ long, minutely warted. =Pileus= 1.5–2.5 in. across. =Stem= up to .4 in. thick, 1.2 in. long. “This is a beautiful and very distinct species easily known by its red stem, mild taste and white spores.” _Peck_, 42d Rep. N.Y. State Bot. [Illustration: Photographed by Dr. J.R. Weist. PLATE XLV_a_. RUSSULA PURPURINA. ] =R. adus´ta= Fr.—_aduro_, to scorch. =Pileus= pallid or whitish, _grayish-sooty_, equally fleshy, compact, depressed then somewhat infundibuliform, margin at first inflexed, smooth, then erect, without striæ. =Flesh= unchangeable. =Stem= solid, obese, of the same color as the pileus. =Gills= adnate then decurrent, _thin, crowded_, unequal, white then dingy, not reddening when touched. _Fries._ =Spores= subglobose, almost smooth, 8–9µ _Massee_. In pine and mixed woods. West Virginia, Pennsylvania, New Jersey, in pine woods and in mixed woods. August to frost. _McIlvaine._ R. adusta is solitary but often in small troops. It is easily recognized by the brownish blotches upon its cap, and the crowding of its thin gills. The solid flesh must be well cooked. It is then of good flavor. (Plate XLV_b_.) [Illustration: RUSSULA BREVIPES. After Prof. Peck. ] =R. bre´vipes= Pk.—_brevis_, short; _pes_, a foot. =Pileus= 3–5 in. broad, at first convex and umbilicate, then infundibuliform, dry, glabrous or slightly villose on the margin, white, sometimes varied with reddish-brown stains. =Flesh= whitish, taste mild, slowly becoming slightly acrid. =Lamellæ= thin, close, adnate or slightly rounded behind; white. =Stem= solid, white. =Spores= globose, verruculose, 10–13µ. =Stem= 6–10 lines long, 6–10 lines thick. Sandy soil in pine woods. Quogue. September.